Vacuum circuit breaker polar and manufacturing method thereof
A technology for vacuum circuit breakers and poles, which is applied in the direction of high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems of increasing creepage distance, potential safety hazards, high-voltage breakdown discharge, etc., to overcome the problem of creepage distance, The effect of enhancing safety and simplifying manufacturing difficulty
Inactive Publication Date: 2009-05-06
施耐德电气(中国)投资有限公司
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Problems solved by technology
[0004] Increasing the creepage distance in this way not only increases the difficulty of epoxy pouring, but once pollutants enter the pole, it is also easy to cause high voltage breakdown and discharge, causing danger and a greater safety hazard
Method used
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[0037] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0038] figure 2 It is a sectional view showing a pole of a vacuum circuit breaker according to an embodiment of the present invention. Such as figure 2 As shown, the pole includes epoxy resin pole shell 1, upper connection 2, vacuum interrupter 3, lower connection 4, insulating rod 5, upper contact 6 of vacuum interrupter, lower contact of vacuum interrupter Head 7, sliding coupling 8, upper contact arm 9, lower contact arm 10, insulating diaphragm 11 and lower end notch 12.
[0039] The upper connection 2 is fixedly connected to the upper contact 6 of the vacuum interrupter, the lower connection 4 is connected to the lower contact 7 of the vacuum interrupter through a sliding connection 8, and the insulating rod 5 is located below the lower connection 4, and through the sliding connection 8 Connect the lower contact 7 of the vacuum interr...
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Abstract
The invention discloses a terminal post of a vacuum circuit breaker and a manufacturing method thereof, wherein the terminal post comprises a terminal post shell body, an upper coupling, a vacuum arc-extinguishing chamber, a lower coupling and an insulation drag rod, wherein the upper coupling and an upper contact of the arc-extinguishing chamber are fixedly connected, a coupling piece is arranged between a lower contact of the arc-extinguishing chamber and the lower coupling, the insulation drag rod is positioned below the lower coupling and connected with the lower contact of the arc-extinguishing chamber, an airtight insulating part is arranged between the inner wall of the terminal post shell body below the lower coupling and the outer wall of the insulation drag rod, and the airtight insulating part, the outer wall of the insulating drag rod and the inner wall of the terminal post shell body are combined without electric clearance. Through the airtight insulation of the airtight insulating part, a high-voltage live part and a metal framework below the terminal post are completely insulated, thereby the creepage distance problem at the lower end of the terminal post is fundamentally solved, and the security is enhanced.
Description
technical field [0001] The invention relates to a vacuum circuit breaker, in particular to a vacuum circuit breaker pole and a manufacturing method thereof. Background technique [0002] As an important device for the control and protection of electrical equipment, a vacuum circuit breaker usually includes a pole and an operating mechanism. The pole includes a pole shell, an upper connection, a vacuum interrupter, a lower connection and an insulating rod. The upper connection is fixedly connected with the upper contact (static contact) of the vacuum interrupter; the lower connection is connected with the lower contact (movable contact) of the vacuum interrupter through a connecting piece, and the connection methods include soft connection, rolling connection and sliding Join etc. The insulating pull rod is generally located below the lower connection, and is connected with the lower contact of the vacuum interrupter through the connection piece. The pole shell is usually ...
Claims
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Inventor 马有金吴大斌周巧鸽徐军
Owner 施耐德电气(中国)投资有限公司